Existing blocks without machine names fail on fresh install

If you export custom blocks (that already existed) with Features Extra, they will fail to create properly in any site receiving them. The problem is fe_block_boxes table does not have a db record for these blocks. When the feature is enabled/reverted/rebuilt, it hits this line of code:

$bid = fe_block_get_bid($object->machine_name);

Problem is, if the block record does not exist in fe_block_boxes, the code after it will always fail and thus not properly create the block in-full when the Feature is enabled.

The $object itself has a machine_name, but the table has no record of it. I found this to be the case with blocks that existed prior to Features Extra being used... it was a little confusing tracking this down. It came down to me having to do this in a hook_update for my upgrade scripts:

  db_insert('fe_block_boxes')
    ->fields(array(
      'bid' => 1,
      'machine_name' => 'footer_address',
    ))
    ->execute();